ubuntu uninstall python3

1. Uninstall python3.5

sudo apt-get remove python3.5

2. Uninstall python3.5 and its dependencies

sudo apt-get remove --auto-remove python3.5

3. Clear python3.5

To clear python3.5 configuration files and data files, execute the following command:

sudo apt-get purge python3.5
sudo apt-get purge --auto-remove python3.5